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Solve the equation: 5X^2+10x=0

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1 Answer

First, think if there is a GCF (Greatest Common Factor) that you can take out of 5x^2 + 10x. 

The GCF will be 5x. You will now have    5x (x + 2) = 0

For 5x times (x+2) to equal zero, either one or both of these has to be equal to zero. If 5x = 0, that means x=0. If x+2 = 0, that means that x=-2. 

There are two answers to this problem: x = 0 or -2 

(When you substitute these values back into the original equation, you can see that you get 0=0)